题目

某生态系统地处湿润地区,动植物种类繁多,数量庞大,并能长时间地处于稳定状态,生态平衡不容易被打破.这个生态系统是( ) A.森林生态系统 B.草原生态系统 C.农田生态系统 D.湖泊生态系统 答案:AWith no bridge, they had to swim across the river to the _______ bank to ______ the news.A.other; accessB.another; replaceC.opposite; spreadD.other’s; indicate
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